90-second lecture: Irv Epstein and 'The Elephant's Toothpaste'

In this 90-second lecture, Irving Epstein, the Henry F. Fischbach Professor of Chemistry, shows the impact that a catalyst can have on the rate of a chemical reaction. Once you see the result, you'll know why this experiment is called "The Elephant's Toothpaste."

Quicktime 7 is required to view this video. If you do not have the latest version, you may get audio only.